[NTLUG:Discuss] Data recovery - help

[Ben Weatherall]

What about ddrescue?

-Ben


----- Reply message -----
From: "Fred" <fredstevens at yahoo.com>
Date: Mon, Jan 24, 2011 17:03
Subject: [NTLUG:Discuss] Data recovery - help
To: "discuss at ntlug.org" <discuss at ntlug.org>

On Mon, 24 Jan 2011 Wayne Walker <wwalker at solid-constructs.com> wrote:

> This is usually when a disk is accessed as /dev/sdb instead of /dev/sdb1
>
> Run
>
> fdisk -l /dev/sdb    (or sdc ... )
>
> also
>
> dd if=/dev/sdb of=/dev/null count=1024 bs=1048576
>
> That will see if you can read 1 GB at the start of the disk.
>
> Any idea what happened between when it could be seen and now?

Several, many which involve 4 legged fuzz butts.

# fdisk -l /dev/sde

Disk /dev/sde: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xc41ac41a

   Device Boot      Start         End      Blocks   Id  System
/dev/sde1               1       38913   312568641   83  Linux


# dd if=/dev/sde of=/dev/null count=1024 bs=1048576
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 16.3348 s, 65.7 MB/s

===========

# mount /dev/sde1 /media/disk
mount: wrong fs type, bad option, bad superblock on /dev/sde1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so


So, I can't mount it and am afraid that a dd will just copy the problem
to the new drive. Now what?

Fred

ps - I downloaded a trial version of Linux Data Recovery and it
sees all the files, directories, etc but, of course, I am supposed
to put coins in the slot to make it work. If I did that I would have to
go to the proctologist.




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